Observed target KO or switch rate is upstream p: the fraction of relevant encounters where the target was knocked out or switched out. Standard error is upstream d. The conservative score is p − 4d. These ladder observations do not prove a set-specific counter.
How to read this table
Use encounter count and standard error to judge the sample. Damage estimates below use inferred sets and remain separate from the observed ladder metric.
#
Checker
Encounters
Conservative score
Target KO or switch rate
01
Kyurem
DragonIce
OFFENSIVE CHECK
View matchup
187.334
87.0%
Standard error 2.45 points
▾
252+ SpA Kyurem Ice Beam vs. 252 HP / 252+ SpD Landorus-Therian: 540-636 (141.3 - 166.4%) -- guaranteed OHKO
02
Greninja
WaterDark
OFFENSIVE CHECK
View matchup
30.871
91.1%
Standard error 5.13 points
▾
252+ SpA Life Orb Greninja Ice Beam vs. 252 HP / 252+ SpD Landorus-Therian: 400-473 (104.7 - 123.8%) -- guaranteed OHKO
03
Terapagos
Normal
DEFENSIVE CHECK
View matchup
233.138
80.8%
Standard error 2.58 points
▾
252+ Atk Landorus-Therian Earthquake vs. 252 HP / 252+ Def Terapagos: 156-184 (40.6 - 47.9%) -- guaranteed 3HKO
04
Sableye-Mega
DarkGhost
DEFENSIVE CHECK
View matchup
91.364
79.1%
Standard error 4.25 points
▾
252+ Atk Landorus-Therian Earthquake vs. 252 HP / 252+ Def Sableye-Mega: 120-142 (39.4 - 46.7%) -- guaranteed 3HKO
05
Ogerpon-Wellspring
GrassWater
OFFENSIVE CHECK
View matchup
395.337
70.3%
Standard error 2.30 points
▾
252+ Atk Wellspring Mask Ogerpon-Wellspring Ivy Cudgel vs. 252 HP / 0 Def Landorus-Therian: 444-524 (116.2 - 137.1%) -- guaranteed OHKO
06
Dragonite
DragonFlying
OFFENSIVE CHECK
View matchup
275.222
69.1%
Standard error 2.78 points
▾
252+ Atk Dragonite Ice Spinner vs. 252 HP / 0 Def Landorus-Therian: 428-508 (112 - 132.9%) -- guaranteed OHKO
07
Gyarados-Mega
WaterDark
OFFENSIVE CHECK
View matchup
82.859
73.8%
Standard error 4.83 points
▾
252+ Atk Gyarados-Mega Waterfall vs. 252 HP / 0 Def Landorus-Therian: 356-422 (93.1 - 110.4%) -- 62.5% chance to OHKO
08
Iron Valiant
FairyFighting
OFFENSIVE CHECK
View matchup
153.439
68.5%
Standard error 3.75 points
▾
252+ SpA Iron Valiant Moonblast vs. 252 HP / 252+ SpD Landorus-Therian: 135-159 (35.3 - 41.6%) -- guaranteed 3HKO
09
Gliscor
GroundFlying
DEFENSIVE CHECK
View matchup
433.352
62.6%
Standard error 2.32 points
▾
252+ Atk Landorus-Therian Fly vs. 252 HP / 252+ Def Gliscor: 109-129 (30.7 - 36.4%) -- 54.3% chance to 3HKO
10
Latios-Mega
DragonPsychic
OFFENSIVE CHECK
View matchup
89.582
71.4%
Standard error 4.77 points
▾
252+ SpA Latios-Mega Ice Beam vs. 252 HP / 252+ SpD Landorus-Therian: 420-496 (109.9 - 129.8%) -- guaranteed OHKO
11
Great Tusk
GroundFighting
DEFENSIVE CHECK
View matchup
376.167
62.0%
Standard error 2.50 points
▾
252+ Atk Landorus-Therian Fly vs. 252 HP / 252+ Def Great Tusk: 210-248 (48.3 - 57.1%) -- 92.6% chance to 2HKO
12
Urshifu-Rapid-Strike
FightingWater
OFFENSIVE CHECK
View matchup
230.155
63.3%
Standard error 3.18 points
▾
252+ Atk Urshifu-Rapid-Strike Surging Strikes (3 hits) vs. 252 HP / 0 Def Landorus-Therian on a critical hit: 456-540 (119.3 - 141.3%) -- guaranteed OHKO
13
Tornadus-Therian
Flying
OFFENSIVE CHECK
View matchup
232.606
63.0%
Standard error 3.17 points
▾
252+ SpA Tornadus-Therian Hurricane vs. 252 HP / 252+ SpD Landorus-Therian: 145-172 (37.9 - 45%) -- guaranteed 3HKO
14
Ursaluna
GroundNormal
OFFENSIVE CHECK
View matchup
95.155
69.1%
Standard error 4.74 points
▾
252+ Atk Ursaluna Ice Punch vs. 252 HP / 0 Def Landorus-Therian: 416-492 (108.9 - 128.7%) -- guaranteed OHKO
15
Zamazenta
Fighting
OFFENSIVE CHECK
View matchup
409.034
58.1%
Standard error 2.44 points
▾
252+ Atk Zamazenta Ice Fang vs. 252 HP / 0 Def Landorus-Therian: 324-384 (84.8 - 100.5%) -- 6.3% chance to OHKO
16
Keldeo
WaterFighting
OFFENSIVE CHECK
View matchup
54.613
71.2%
Standard error 6.13 points
▾
252+ SpA Keldeo Surf vs. 252 HP / 252+ SpD Landorus-Therian: 270-318 (70.6 - 83.2%) -- guaranteed 2HKO
17
Tapu Lele
PsychicFairy
OFFENSIVE CHECK
View matchup
180.065
60.5%
Standard error 3.64 points
▾
252+ SpA Tapu Lele Future Sight vs. 252 HP / 252+ SpD Landorus-Therian in Psychic Terrain: 232-274 (60.7 - 71.7%) -- guaranteed 2HKO
18
Charizard-Mega-Y
FireFlying
OFFENSIVE CHECK
View matchup
221.505
56.7%
Standard error 3.33 points
▾
252+ SpA Charizard-Mega-Y Overheat vs. 252 HP / 252+ SpD Landorus-Therian in Sun: 339-400 (88.7 - 104.7%) -- 31.3% chance to OHKO
19
Swampert-Mega
WaterGround
OFFENSIVE CHECK
View matchup
55.628
67.2%
Standard error 6.30 points
▾
252+ Atk Swampert-Mega Ice Punch vs. 252 HP / 0 Def Landorus-Therian: 436-516 (114.1 - 135%) -- guaranteed OHKO
20
Zapdos
ElectricFlying
SOFT CHECK
View matchup
334.396
52.7%
Standard error 2.73 points
▾
252+ SpA Zapdos Hidden Power Ice vs. 252 HP / 252+ SpD Landorus-Therian: 232-276 (60.7 - 72.2%) -- guaranteed 2HKO
21
Melmetal
Steel
DEFENSIVE CHECK
View matchup
193.71
55.3%
Standard error 3.57 points
▾
252+ Atk Landorus-Therian Earthquake vs. 252 HP / 252+ Def Melmetal: 218-258 (45.9 - 54.4%) -- 49.6% chance to 2HKO
22
Charizard-Mega-X
FireDragon
SOFT CHECK
View matchup
220.366
54.1%
Standard error 3.36 points
▾
252+ Atk Tough Claws Charizard-Mega-X Flare Blitz vs. 252 HP / 0 Def Landorus-Therian: 306-361 (80.1 - 94.5%) -- guaranteed 2HKO
23
Pinsir-Mega
BugFlying
OFFENSIVE CHECK
View matchup
42.752
68.8%
Standard error 7.08 points
▾
252+ Atk Aerilate Pinsir-Mega Double-Edge vs. 252 HP / 0 Def Landorus-Therian: 322-379 (84.2 - 99.2%) -- guaranteed 2HKO
24
Garchomp
DragonGround
SOFT CHECK
View matchup
290.538
51.1%
Standard error 2.93 points
▾
252+ Atk Garchomp Outrage vs. 252 HP / 0 Def Landorus-Therian: 235-277 (61.5 - 72.5%) -- guaranteed 2HKO
25
Clefable
Fairy
DEFENSIVE CHECK
View matchup
67.602
62.4%
Standard error 5.89 points
▾
252+ Atk Landorus-Therian Earthquake vs. 252 HP / 252+ Def Clefable: 171-202 (43.4 - 51.2%) -- guaranteed 3HKO after Leftovers recovery
26
Lopunny-Mega
NormalFighting
OFFENSIVE CHECK
View matchup
141.995
55.1%
Standard error 4.17 points
▾
252+ Atk Lopunny-Mega Triple Axel (120 BP) (3 hits) vs. 252 HP / 0 Def Landorus-Therian: 660-780 (172.7 - 204.1%) -- guaranteed OHKO
27
Scizor-Mega
BugSteel
SOFT CHECK
View matchup
147.411
54.5%
Standard error 4.10 points
▾
252+ Atk Technician Scizor-Mega Dual Wingbeat (2 hits) vs. 252 HP / 0 Def Landorus-Therian: 176-208 (46 - 54.4%) -- 52.8% chance to 2HKO
28
Slowbro
WaterPsychic
SOFT CHECK
View matchup
137.608
53.3%
Standard error 4.25 points
▾
252+ SpA Slowbro Ice Beam vs. 252 HP / 252+ SpD Landorus-Therian: 300-356 (78.5 - 93.1%) -- guaranteed 2HKO
29
Ferrothorn
GrassSteel
SOFT CHECK
View matchup
135.87
53.3%
Standard error 4.28 points
▾
252+ Atk Ferrothorn Power Whip vs. 252 HP / 0 Def Landorus-Therian: 189-223 (49.4 - 58.3%) -- 98.8% chance to 2HKO
30
Iron Treads
GroundSteel
SOFT CHECK
View matchup
231.039
48.7%
Standard error 3.29 points
▾
252+ Atk Iron Treads Ice Spinner vs. 252 HP / 0 Def Landorus-Therian: 380-448 (99.4 - 117.2%) -- 93.8% chance to OHKO
Ranked #2 with 20.56% usage. Sorted by conservative score.